EP0863299B1 - Thermostatventil zum Schnelleinbau - Google Patents

Thermostatventil zum Schnelleinbau Download PDF

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Publication number
EP0863299B1
EP0863299B1 EP98400464A EP98400464A EP0863299B1 EP 0863299 B1 EP0863299 B1 EP 0863299B1 EP 98400464 A EP98400464 A EP 98400464A EP 98400464 A EP98400464 A EP 98400464A EP 0863299 B1 EP0863299 B1 EP 0863299B1
Authority
EP
European Patent Office
Prior art keywords
thermostat
housing
passage
upstream
support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98400464A
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English (en)
French (fr)
Other versions
EP0863299A1 (de
Inventor
Jean Chamot
Claude Henault
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vernet SA
Original Assignee
Vernet SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vernet SA filed Critical Vernet SA
Publication of EP0863299A1 publication Critical patent/EP0863299A1/de
Application granted granted Critical
Publication of EP0863299B1 publication Critical patent/EP0863299B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/01—Control of temperature without auxiliary power
    • G05D23/02—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature
    • G05D23/021—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature the sensing element being a non-metallic solid, e.g. elastomer, paste
    • G05D23/022—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature the sensing element being a non-metallic solid, e.g. elastomer, paste the sensing element being placed within a regulating fluid flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2070/00—Details

Definitions

  • the invention relates to thermostats intended for regulate the flow of a fluid, in particular in a circuit of thermal engine cooling.
  • thermostats shown on Figures 1, 2 and 3 insertable between conduits fluid or preferably adaptable directly to the cylinder head of an engine.
  • thermostats include a box 1 bent, usually aluminum or die-cast aluminum alloy, intended to be fixed to a support S (flange of a fluid or cylinder head of an engine) and in which a internal passage 2 bent for the fluid, having a fluid outlet region 21 opposite the support and a fluid inlet region 22 on the side thereof, and a thermostatic element 3 housed in the passage and comprising two parts 31, 32 movable relative to each other.
  • a first part 31 of the element thermostatic 3 is kept in a fixed position in the housing, and the second part 32, extending upstream of the first, and carrying a suitable shutter device 4 to cooperate with a seat 23 formed in an area of narrowing of the housing, is movable in translation by relation to this first part to distance and bring closer until contact with the seat closing device.
  • the free end of the first part 31 of the thermostatic element 3 is supported in a housing 10 centered on the longitudinal axis of the passage, carried by at minus one longitudinal rib extending radially to the interior of passage 2 from the wall thereof; the second part 32 is carried and guided in its movement by a trigger guard 5 in contact with at least one region of its periphery with the wall of passage 2 and pierced with a hole central in which this second part is mounted sliding.
  • the shutter device 4 and the trigger guard 5 are subjected to the force of a helical spring 6, extending here according to a cylinder, tending to separate them from each other.
  • the housing 1 is in two parts 1A, 1B in which are respectively arranged the output region 21 of fluid and the region 22 of fluid inlet, and the thermostatic element is housed in part of the fluid outlet part which extends along a rectilinear central axis, the upstream part of the workpiece output 1A being itself housed in the downstream part of the entrance room, which is angled.
  • the upstream part of the outlet part 1A comprises two fingers 11 extending upstream of the seat 23 the wall of the passage for the fluid, diametrically opposed, having two respective transverse grooves being made opposite; trigger guard 5 is locked against the shoulders upstream of these grooves 12 under the action of the spring 6.
  • the two parts 1A, 1B constituting the housing 1 externally have flanges 13, 14 facing each other, having ears pierced with holes for the passage of screw ; the seal between the two parts 1A, 1B is ensured by a deformable annular seal 7 resiliently inserted into a extending groove circumferentially in one of the flanges, opposite the other flange, which is crushed against this other flange.
  • the output part 1A of the housing comprises in additionally a conduit 16 extending radially outside of this and opening into its internal passage downstream of the seat 23; similarly, the input part 1B of the housing further comprises an attached conduit 17 extending towards outside and opening into its passage upstream of the seat.
  • the housing 1 is generally bent at a right angle taking into account the location of the different organs arranged under the hood of the vehicle, and the upstream part of the output piece 1A comprising the two fingers 11 between which is arranged the upstream region of the movable part 32 of the thermostatic element 3 extends in the downstream part and in the elbow of entry room 1B.
  • the seal between the housing 1 and its support is ensured by an elastically deformable seal 8 inserted in a groove extending around the inlet of the entry region 22 of entry room 1B.
  • the thermostat consists of a relatively large number of parts, and that the element thermostatic 3 can only be assembled and disassembled from upstream of the output part 1A when the two parts 1A, 1B constituting the housing 1 are separate; moreover, the effort exerted by the trigger guard 5 pushed by the spring 6 is exerted on the housing 1 and more precisely on the upstream fingers 11 of the output part 1A, relatively fragile, which compromises the reliability of the housing and thus of the thermostat, unless to use a relatively strong material like aluminum or a relatively expensive aluminum alloy.
  • document EP 0 600 150 A presents the Characteristics of the preamble of claim 1.
  • the invention aims to remedy these drawbacks and for this purpose relates to a thermostat of the type comprising a angled housing adapted to be fixed to a support and in which extends a bent interior passage for a fluid having a fluid outlet region opposite the support and a fluid inlet region on the support side, and an element thermostatic with two moving parts, one by compared to the other, a first part being maintained in fixed position in the housing, and the second, extending in upstream of the first, carrying a suitable shutter device to cooperate with a seat established in an area of narrowing of the housing, being movable in translation by relation to this first part to distance and bring closer until contact with the seat closing device and being guided upstream of the shutter device by a member guide subjected to a return force exerted upstream by an elastic member, thermostat characterized in that the housing is in one piece in the passage of which is housed the thermostatic element, the first part of the thermostatic element is pressed against a region of the wall of the passage close to the bend thereof and centered on the entry region
  • the invention is a thermostat as defined above, in which the guide member is a trigger guard whose ends are adjusted in the passage and drilled a hole in which the second part of the element thermostat is slidably mounted, the device shutter and trigger guard being subjected to the effort of a spring tending to separate them from each other, characterized in that the securing means are projections extending in the passage to block the trigger guard in upstream direction under the action of the spring before the mounting the thermostat on the support, and in that the trigger guard carries at least one tongue extending upstream beyond the upstream end of the housing and also transversely outwards beyond walls in look of the projections, so that when the thermostat is fixed to the support, the tongue is pushed back by the support downstream of the passage and the spring force on the trigger guard be carried over from the projections to the support.
  • the guide member is a trigger guard whose ends are adjusted in the passage and drilled a hole in which the second part of the element thermostat is slidably mounted
  • the device shutter and trigger guard being subjected to the
  • the trigger guard carries at least one tongue protruding beyond the upstream end of the housing and also radially outwards
  • the mounting the case on the support automatically removes the support of this trigger guard against the projections and relieves these from the pressure exerted by the spring.
  • FIGS. 4 to 10 having a number of points in common with the thermostat known from Figures 1 to 3, the organs correspondents have been designated by the same numbers -from reference.
  • This thermostat being designed to be perfectly interchangeable with the thermostat known in FIGS. 1 to 3, includes a box 1 bent here at a right angle for be attached to an identical support; inside, extends a passage 2 for the fluid, also bent at a right angle, having a fluid outlet region 21 opposite the support and a fluid inlet region 22 on the side of this one ; a thermostatic element 3 fully housed in the passage has two moving parts 31, 32 one with respect to the other, a first part 31 being maintained in a fixed position in the housing, and the second part 32 extending upstream of the first, bearing a shutter device 4 adapted to cooperate with a seat 23 formed in a narrowing zone of the housing, being movable in translation relative to this first part.
  • the housing 1 is in one piece, and if the free end of the first part 31 maintained in a fixed position, the thermostatic element is in support in a housing 10 centered on a longitudinal axis of the passage, it is not the longitudinal axis of the part of the housing previously corresponding to the part of output 1A, but from that of the part corresponding to the entrance room 1B; in other words, the element thermostatic 3 and the support thereof in the housing 1 are not centered on the central axis of the region of exit, but on that of the region of entry, of the case.
  • the second part 32 of the thermostatic element is carried and guided in its movement by a trigger guard 5 whose ends are adjusted in passage 2 and pierced with a central hole in which this second part is slidably mounted.
  • the shutter device 4 and the trigger guard 5 are still subjected to the force of a spring 6 approximately helical, extending here along a trunk cone, and tending to separate them from each other; for block the trigger guard in the upstream direction under the action of spring before mounting the thermostat, the inlet region fluid has projections 19, here two projections opposite, extending towards the center of passage 2; the spacing of these projections 19 is less than the length of trigger guard 5, but the entrance region 22 of passage 2 is also present in at least one other direction transverse than that in which the protrusions, an opening wider than the length of the trigger guard, over a width greater than that thereof; thus, the thermostatic element 3 can be inserted into the housing so that the trigger guard 5 is oriented in this other direction, against the effort exerted by the spring 6, then pivoted about its axi
  • the trigger guard 5 has, at least at near its ends, a U-shaped cross section whose side branches define wings or tabs 51 spaced a distance greater than the width of the projections 19 and extending towards the support, these tabs having a height greater than the distance between the bearing surface for trigger guard 5 on the projections 19 of the housing 1, of the free end of the box upstream side. So when the thermostat is separated of the support, the trigger guard 5 rests on the shoulder of the projections 19 with its tongues extending transversely when passing on either side of these projections (FIGS. 4 to 7).
  • a conduit 16 extends radially outside housing 1 and opens into passage 2 downstream of seat, and a conduit 17 extends outward and opens into passage 2 upstream of the seat.
  • Another conduit 18 also opens into passage 2 upstream of the seat, for mounting a temperature probe (figure 10) as will be seen in more detail below.
  • These conduits can be made in one piece with the case 1.
  • the seal between the housing 1 and its support is ensured by an elastically deformable seal 8 in a groove running around the inlet of the entry region 22, at a distance from this orifice.
  • the support created in the wall of the passage 2 for the fixed part 31 of the element thermostatic can advantageously be provided with a metal trim having a cell constituting the housing 10 for this fixed part 31.
  • the shutter can be made up of several parts, for example a plastic part intended to bear against the seat 23 of the housing and a metal cup or trigger guard bearing against a shoulder of a flange of the movable part 32 of the thermostatic element.
  • the seat 23 for the shutter 4 is made upstream of the bend in passage 2, in the area of transition between the elbow and the part of the housing which extends upstream to entry region 22 of passage; for example it has a frustoconical shape widening upstream.
  • the trigger guard 5 has a withdrawal downstream in its central part; this withdrawal can be made by portions of the trigger guard which are inclined and whose base can advantageously constitute a guiding means for spring 6, avoiding lateral displacement of the upstream end of it.
  • the periphery conduits may have corrugations extending annularly.
  • the third conduit 18 is intended as we have seen to receive a temperature probe 9; so that the seal is maintained, an annular seal 181 is inserted between the probe 9 and the wall of the conduit 18, bearing against a shoulder 182 of the duct, corresponding to a narrowing of the diameter thereof towards inside the housing 1.
  • the invention is not limited to the embodiment described and shown above, and we can provide other forms without departing from its frame, and in particular make the case in very diverse materials, taking into account that the mechanical stresses applied to it are significantly lower than those applied to housing in the case of known thermostats placed in the same working conditions.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Temperature-Responsive Valves (AREA)

Claims (10)

  1. Thermostat mit einem gekrümmten Gehäuse (1), das auf einer Halterung (S) befestigt wird, und das einen gekrümmten inneren Kanal (2) für ein Fluid aufweist und einen Ausgangsbereich (21) für das Fluid gegenüber der Halterung und einen Eingangsbereich (22) für das Fluid an der Halterung enthält, sowie einen Thermostat (3) mit zwei untereinander beweglichen Teilen (31, 32), wobei der erste Teil in einer festen Position in dem Gehäuse gehalten wird, und der zweite Teil (32) oberhalb des ersten Teils verläuft, und einen Deckel (4) trägt, der mit einem Sitz (32) zusammenwirkt, der durch eine Verengung des Gehäuses hergestellt wird, und der in seitlicher Richtung gegenüber dem ersten Teil verschiebbar ist, um den Deckel von dem Sitzes zu entfernen oder ihn anzunähern und oberhalb des Deckels durch ein Führungsorgan (5) geführt wird, das in oberer Richtung der Rückzugskraft eines elastischen Organs (16) unterzogen wird, und der erste Teil (31) des Thermostats (3) an einem Bereich der Wand des Kanals (2) an dessen Krümmung zur Anlage kommt und auf den Eingangsbereich (22) zentriert ist,
    dadurch gekennzeichnet, dass
    das Gehäuse (1) in einem Stück in dem Kanal (2) ausgebildet ist, in den der Thermostat eingesetzt wird, und der Eingangsbereich (22) für das Fluid des inneren Kanals (2) Vorsprünge (19) für die Befestigung des Führungsorgans an der Wand des Kanals aufweist, welche in dem Kanal verlaufen, um das Führungsorgan (5) in oberer Richtung zu blockieren, und das Führungsorgan (5) mindestens eine Langette (51) aufweist, die flnssawfwärts über den oberen Endabschnitt des Gehäuses hinausreicht, wenn der Thermostat nicht auf der Halterung (S) befestigt ist, und ebenfalls seitlich in Richtung nach außen über die Wände der Vorsprünge hinausragt, damit nach der Befestigung des Thermostats an der Halterung die Langette (51) durch die Halterung (S) an die Unterseite des Kanals verschoben wird, und die Kraft, die von dem elastischen Organ (6) auf das Führungsorgan ausgeübt wird, mit Hilfe der Vorsplrünge auf die Halterung übertragen wird.
  2. Thermostat nach Anspruch 1,
    dadurch gekennzeichnet, dass
    das Führungsorgan (5) aus einem Bügel besteht, dessen Endabschnitte in dem Kanal (2) befestigt und mit einer Bohrung ausgestattet sind, in welche der zweite Teil (32) des Thermostats gleitend eingesetzt wird, wobei der Deckel (4) und der Bügel (5) der Kraft einer Feder (6) unterzogen werden, die sie voneinander abspreizt, und die Vorsprünge (19) in dem Kanal verlaufen, um den Bügel flussaufwärts unter der Wirkung der Feder (6) vor der Montage des Thermostats auf der Halterung (S) zu blockieren.
  3. Thermostat nach Anspruch 1,
    dadurch gekennzeichnet, dass
    das Gehäuse aus einem Kunststoff besteht.
  4. Thermostat nach Anspruch 1,
    dadurch gekennzeichnet, dass
    der Bereich der Wand des Kanals (2), an dem der feste Teil (31) des Thermostats (3) anliegt, mit einem Beschlag ausgestattet ist, welcher ein Lager (10) enthält, in das dieser feste Teil (31) eingesetzt wird.
  5. Thermostat nach Anspruch 1,
    dadurch gekennzeichnet, dass
    der Sitz (23) oberhalb der Krümmung des Kanals (2) in einem Übergangsbereich zwischen dieser Krümmung und einem Teil des Gehäuses (1) angeordnet ist, welcher in oberer Richtung bis zu dem Eingangsbeieich (22) des Fluids verläuft.
  6. Thermostat nach Anspruch 1,
    dadurch gekennzeichnet, dass
    der Bügel (5) einen U-förmigen Querschnitt adweist, dessen Schenkel Langetten (51) mit einer Höhe bilden, die über dem Abstand liegt, welcher die Auflagefläche der Vorsprünge (19) des Bügels an dem freien Endabschnitt des Gehäuses (1) in oberer Richtung trennt.
  7. Thermostat nach Anspruch 1,
    dadurch gekennzeichnet, dass
    der Bügel (5) einen U-förmigen Querschnitt aufweist, dessen seitliche Schenkel Langetten (51) bilden, die quer zu dem Kanal (2) auf den beiden Seiten der Vorsprünge so verlaufen, dass sie an der Oberfläche der Halterung (S) gegenüber dem Gehäuse (1) liegen.
  8. Thermostat nach Anspruch 1,
    dadurch gekennzeichnet, dass
    der Bügel (5) in seinem zentralen Teil eine flussabwärts verlaufende Verengung aufweist.
  9. Thermostat nach Anspruch 1,
    dadurch gekennzeichnet, dass
    das Gehäuse (1) an seiner Außenseite Leitungsrohre (16, 17) aufweist, die einteilig mit diesem Gehäuse ausgebildet sind.
  10. Thermostat nach Anspruch 1,
    dadurch gekennzeichnet, dass
    das Gehäuse (1) ein äußeres Leitungsrohr (18) für die Montage und Aufnahme eines Temperaturfühlers (9) aufweist, das einteilig mit diesem Gehäuse ausgebildet ist.
EP98400464A 1997-03-04 1998-02-26 Thermostatventil zum Schnelleinbau Expired - Lifetime EP0863299B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9702562 1997-03-04
FR9702562A FR2760544A1 (fr) 1997-03-04 1997-03-04 Thermostat a montage rapide

Publications (2)

Publication Number Publication Date
EP0863299A1 EP0863299A1 (de) 1998-09-09
EP0863299B1 true EP0863299B1 (de) 2002-01-02

Family

ID=9504397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98400464A Expired - Lifetime EP0863299B1 (de) 1997-03-04 1998-02-26 Thermostatventil zum Schnelleinbau

Country Status (4)

Country Link
US (1) US5961039A (de)
EP (1) EP0863299B1 (de)
DE (1) DE69803322T2 (de)
FR (1) FR2760544A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3928930B2 (ja) * 2002-01-31 2007-06-13 日本サーモスタット株式会社 サーモスタット装置
FR2855214B1 (fr) * 2003-05-22 2005-07-15 Mann & Hummel Filter Boitier de sortie d'eau pour un moteur a combustion interne et procede de fabrication
DE102004011984B4 (de) * 2004-03-11 2014-10-09 Dbk David + Baader Gmbh Elektrothermischer Stellantrieb mit verbessertem Heizmodul und Thermostatventilanordnung
DE102007015078A1 (de) * 2007-03-29 2008-10-02 Bernd Hansen Vorrichtung zum Minimieren des Sauerstoffgehaltes

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3136337A (en) * 1961-04-17 1964-06-09 Elton B Fox Thermostatically operated diversion valve for engine cooling system
US3485448A (en) * 1967-08-02 1969-12-23 Chrysler Corp Engine coolant flow control valve
US3558046A (en) * 1968-10-22 1971-01-26 Eaton Yale & Towne Thermostat
US3785554A (en) * 1970-09-25 1974-01-15 Evans Mfg Co Jackes Temperature responsive throttling valve
US3917163A (en) * 1973-01-04 1975-11-04 Eaton Corp Waterline thermostat and assembly
US3858801A (en) * 1973-04-18 1975-01-07 Standard Thomson Corp Thermally responsive valve apparatus
GB1382408A (en) * 1973-09-12 1975-01-29 Gilardini Ind Spa Thermostatic valves for engine cooling systems
DE2503946B2 (de) * 1975-01-31 1980-08-14 Gustav Wahler Gmbh U. Co, 7300 Esslingen Thermostatisches Ventil
DE9105021U1 (de) * 1990-11-17 1991-06-20 Gustav Wahler Gmbh U. Co, 7300 Esslingen Thermostatventil zur Regelung der Temperatur der Kühlflüssigkeit einer Brennkraftmaschine
DE9110126U1 (de) * 1991-08-16 1992-12-17 Behr-Thomson Dehnstoffregler GmbH & Co, 7014 Kornwestheim Thermostatventil
DE4139328A1 (de) * 1991-11-29 1993-06-03 Behr Thomson Dehnstoffregler Ringschieberthermostateinsatz
DE9204611U1 (de) * 1992-04-03 1993-08-05 Behr-Thomson Dehnstoffregler Gmbh & Co, 70806 Kornwestheim Deckel für ein Gehäusethermostat
DE9216490U1 (de) * 1992-12-03 1993-01-28 Gustav Wahler Gmbh U. Co, 73730 Esslingen Thermostatisches Ventil
US5452251A (en) * 1992-12-03 1995-09-19 Fujitsu Limited Semiconductor memory device for selecting and deselecting blocks of word lines
US5279264A (en) * 1993-05-26 1994-01-18 In-Line Products Incorporated Viewable thermostat device
FR2713303B1 (fr) * 1993-11-30 1996-03-08 Vernet Sa Soupape thermostatique.
FR2739468B1 (fr) * 1995-10-02 2003-03-07 Inst Francais Du Petrole Procede et dispositif de regulation de la temperature d'un fluide

Also Published As

Publication number Publication date
US5961039A (en) 1999-10-05
FR2760544A1 (fr) 1998-09-11
DE69803322T2 (de) 2002-07-11
EP0863299A1 (de) 1998-09-09
DE69803322D1 (de) 2002-02-28

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